by Kastro
Paper/Archive/CVE-2026-51540

CVE-2026-51540

mitre — OpENer 2.3.0 (master branch up to commit 76b95cf) is vulnerable to a severe memory corruption issue caused by an integer underflow in the…

EPSS 0.6%public exploitCVSS 9.8
critical.is priorityof 100
49
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 47.0.470 × 209.4Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

OpENer 2.3.0 (master branch up to commit 76b95cf) is vulnerable to a severe memory corruption issue caused by an integer underflow in the processing of connected explicit messages (SendUnitData).

Affected

ProductAffectedFixed inSource
n/an/a–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/EIPStackGroup/OpENer/issues/568refgist.github.com/MrAlaskan/5e0c2af7f4a1d188814c7fa8f812c8da